Insulating rail top bracket



FIG. 1 is a front perspective view of an insulating rail top bracket showing my new design;

FIG. 2 is rear perspective view thereof;

FIG. 3 is a front view thereof,

FIG. 4 is a rear view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a left side view thereof;

FIG. 7 is bottom view thereof; and,

FIG. 8 is a top view thereof. 

The ornamental design for an insulating rail top bracket, as shown and described. 